java - 添加 spring-boot-starter-web 时 Spring Boot 应用程序启动出错

Question

使用spring-cloud-starter-aws-secrets-manager-config启动一个非常基本的Spring boot应用程序来检索AWS sectrets可以工作正确。但是，当我将 spring-boot-starter-web 依赖项添加到 Web 服务支持项目中时，spring-cloud-starter-aws-secrets-manager-config code> 错误 并且应用程序无法启动。

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.6.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-aws-secrets-manager-config</artifactId>
            <version>2.0.1.RELEASE</version>
        </dependency>
<!-- if I remove spring-boot-starter-web it all starts properly -->
                <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

java

package com.secrets.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;


@SpringBootApplication
public class App
{

    public static void main( String[] args )
    {
        SpringApplication.run(App.class, args);
    }

}

bootstrap.yml

spring:
  application:
    name: app_name
aws:
  secretsmanager:
    prefix: /secret
    defaultContext: application
    profileSeparator: _
    failFast: true
    name: app_name
    enabled: true

应用程序应该正常启动，但是应用程序出现以下错误:

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled. 2019-07-03 11:57:16.563 ERROR 73839 --- [ main] o.s.boot.SpringApplication : Application startup failed

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'propertySourceBootstrapConfiguration': Unsatisfied dependency expressed through field 'propertySourceLocators'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'awsSecretsManagerPropertySourceLocator' defined in org.springframework.cloud.aws.autoconfigure.secretsmanager.AwsSecretsManagerBootstrapConfiguration: Unsatisfied dependency expressed through method 'awsSecretsManagerPropertySourceLocator' parameter 1; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'aws.secretsmanager-org.springframework.cloud.aws.secretsmanager.AwsSecretsManagerProperties': Could not bind properties to AwsSecretsManagerProperties (prefix=aws.secretsmanager, ignoreInvalidFields=false, ignoreUnknownFields=true, ignoreNestedProperties=false); nested exception is java.lang.NullPointerException at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761) ~[spring-beans-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543) ~[spring-context-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE] at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:303) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE] at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:134) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE] at org.springframework.cloud.bootstrap.BootstrapApplicationListener.bootstrapServiceContext(BootstrapApplicationListener.java:187) [spring-cloud-context-1.3.2.RELEASE.jar:1.3.2.RELEASE] at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:102) [spring-cloud-context-1.3.2.RELEASE.jar:1.3.2.RELEASE] at org.springframework.cloud.bootstrap.BootstrapApplicationListener.onApplicationEvent(BootstrapApplicationListener.java:68) [spring-cloud-context-1.3.2.RELEASE.jar:1.3.2.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:167) [spring-context-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) [spring-context-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:122) [spring-context-4.3.10.RELEASE.jar:4.3.10.RELEASE] at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:74) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE] at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE] at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:325) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:296) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE] at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107) [spring-boot-1.5.6.RELEASE.jar:1.5.6.RELEASE] at com.secrets.demo.App.main(App.java:13) [classes/:na]

Answer 1

您正在混合 1.5.x 和 2.x 依赖项。由于这两个版本之间存在重大更改，因此在同一项目中使用这两个版本时经常会出现兼容性问题。

由于 spring-cloud-starter-aws-secrets-manager-config 仅支持 2.x，因此您需要将 spring boot starter 父级升级到 2.x 版本。